- Why'd you stop? Something gone wrong?
- Somebody pulled the emergency cord.

5 seconds sound clip from the For a Few Dollars More movie soundboard.

You can hear this line at 00:06:04.770 in the Blu-ray version of the movie.

Quote context

[...]

- I peddle goods around here, and I better tell you you're on the wrong train.

- I think the nearest stop to Tucumcari is Amarillo. By getting off at Sante Fe and returning by way of Amarillo you should be able to get right where you're going.

- You see, the train doesn't stop at Tucumcari.

- This train'll stop at Tucumcari.

(Steam train emergency stop)

- Why'd you stop? Something gone wrong?

- Somebody pulled the emergency cord.

- Hey, mister, you just can't pull the emergency cord and jump off. Tell me, why'd you stop that train? If you want to get off, you...

- Well, the railroad company'd be mighty pleased to make any arrangements, for any passenger if you want to get off here, sir.

- I did get off. Thanks.

- All right, let's go! Go ahead! Let's go!

- Guy passed by here in person and added on those two zeros. He was spittin' mad when he saw what they was offerin'. He wasn't flattered.

[...]